A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . POSSIL FAUNA. 133 PLATE LVir. Fossil Shells. Figs. 1, & 3. Upper and under view of a discoidal spiral univalve shell [Euomphalus pentan-gulatus, of Sowerby), from the mountain limestone of Derbyshire. The extinctgenus Euomphalus, a name suggestive of the deeply excavated disk, comprises manyspecies which occur in the Silurian, Devonian, and Carboniferous formations. Theshell has chambers, or rather obsolete cavities sea
A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . POSSIL FAUNA. 133 PLATE LVir. Fossil Shells. Figs. 1, & 3. Upper and under view of a discoidal spiral univalve shell [Euomphalus pentan-gulatus, of Sowerby), from the mountain limestone of Derbyshire. The extinctgenus Euomphalus, a name suggestive of the deeply excavated disk, comprises manyspecies which occur in the Silurian, Devonian, and Carboniferous formations. Theshell has chambers, or rather obsolete cavities sealed up by a shelly partition, in theabandoned part of the spire.^ Fig. 2. An elegant univalve shell, completely silicified or transmuted into flint {Natica canrena,of Parkinson, Natica Gentii, of Sowerby), from the upper greensand of Blackdown. Figs. 4, & 6. Two views of the same specimen; a univalve {Nerita conoidea, of Lamarck), inwhich the apex or upper part is destroyed, and the interior of the shell is filled withyellowish brown chalcedony ; in fig. 4, a cast of the spire is seen, and in fig. 6, themouth of the shell, with the chalcedony partially filling u
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectpaleontology, bookyea
